Wiring a 63sa switch for a magdyno

Information relating to the Matchless G12 or AJS Model 31 650cc twin
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Wiring a 63sa switch for a magdyno

Postby ixonchitts » Tue Apr 16, 2019 11:02 am

Hi,
I have a 1960 G12 with magdyno. It has an MCH 61 headlight shell to which the previous owner fitted two toggle switches. I want to replace these with appropriate lighting switch and dummy ignition switch. The 41sa switch won't fit the hole in the shell so I have a 63sa switch but cant work out how to connect for a magdyno. I 've searched on line to no avail. Has anyone got a wiring diagram, or can advise me which wires go to which terminals?
Thanks
Steve

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Re: Wiring a 63sa switch for a magdyno

Postby SPRIDDLER » Tue Apr 16, 2019 11:56 am

I'm not familiar with the 63sa switch but there are wiring diagrams and switch configurations on page 68 onward of this Workshop Manual which may help you to decipher the connections:

http://archives.jampot.dk/book/Workshop ... .NEILL.pdf

This any good? - from a two minute Google search........

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Re: Wiring a 63sa switch for a magdyno

Postby ixonchitts » Tue Apr 16, 2019 6:07 pm

Thanks, I had found that diagram but I believe the 63sa and later 88sa were used on models with alternators and ignition switches. The wiring on mine matches that for 1960/61 magneto twins in the workshop manual, with 7 terminals. How do I translate that to a 63sa switch with 10 terminals with no alternator?

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Re: Wiring a 63sa switch for a magdyno

Postby billbeavis » Tue Apr 16, 2019 8:55 pm

Magneto twins.pdf
You could try this diagram ignoring the alternator connections. Bill
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Re: Wiring a 63sa switch for a magdyno

Postby ixonchitts » Wed Apr 17, 2019 8:20 am

Cheers Bill, I'd missed that one.

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